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Valtra 6850 - Quick- Shift Gear; Calibrating the Quick-Shift Gear; Power Take - off

Valtra 6850
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Figure 4. Inputs and outputs to/from the ECS for
controlling the quick ---shift gear
Figure 5. Inputs and outputs to/from the ECS
for controlling the PTO.
367
Model Code Page
34. Autocontrol ---III
6600E, 8100E 341 5
15. 6. 1992
1. 9. 1992
C. Quick--shift gear
--- set the quick---shift gear rocker switch to M---position
--- drive the tractor and engage and disengage the quick---
shift gear with a switch on the speed gear lever knob
--- i n H A R E --- p o s i t i o n , a l i g h t c o m e s o n i n t h e A / M --- s w i t c h
--- set the lever knob switch to the HARE ---position
--- set the A/M ---switch to the middle position (A
2
, max. effect)
--- set the display to show the engine revs.
--- select gear H1 and drive at engine revs of 2000 r/min
--- quick ---shift gear changes automatically to the TORTO-
I S E --- r a n g e
--- continue driving and press the brake pedals (latched to-
gether).
--- the quick ---shift gear changes automatically to the HARE ---
range at engine revs of about 1700 RPM
--- A / M --- s w i t c h l i g h t c o m e s o n
--- release the brakes and the quick---shift gear changes to the
TORTOISE ---range when engine revs increases
--- A / M --- s w i t c h l i g h t g o e s o u t
--- s e t t h e A / M --- s w i t c h t o t h e p o s i t i o n A
1
(max. torque) (switch
front edge down)
--- make the same test as above; quick---shift gear changes to
the HARE ---range at engine revs of about1400 RPM.
--- A / M --- s w i t c h l i g h t c o m e s o n
--- release the brake pedals and the quick---shift gear changes
to the TORTOISE---range when the engine revs increases
--- A / M --- s w i t c h l i g h t g o e s o u t
Calibrating the quick---shift gear
--- set the display to the calibrating mode (see page 340/6)
--- p r e s s t h e R P M --- k e y f o u r t i m e s a n d t h e d i s p l a y s h o w s t e x t
CAL PS
--- p r e s s t h e S E T --- k e y
--- display shows text CAL 700 and the actual engine revs
--- adjust the engine revs to 700±20 RPM (or min revs) with
a hand throttle lever and press SET
--- display shows text CAL 1100 and the actual engine revs
--- adjust the engine revs to 1100 r/min and press SET
--- in the same way go through speeds 1500, 1900 and 2200
(or max. revs)
--- when the last time SET is pressed, the calibration is com-
pleted
--- escape from the calibrating mode by switching off the cur-
rent
D. Power take -- off
--- set the display to show the PTO revs
--- engage PTO 540 and the ind. light comes on
--- switch current off and then on and the ind. light starts to
flash
--- PTO shaft must not rotate
--- move the control lever to neutral and back to engaged posi-
tion
--- 540 ind. light comes on and the PTO shaft starts to rotate
--- disengage the 540 PTO and the ind. light goes out
--- in the same way test the 1000 RPM PTO
--- engage the 540 PTO and remove the emergency switch
(terminator) from the rear socket
--- the PTO shaft stops and the 540 ind. light starts to flash
--- fit the emergency switch back. PTO shaft must not start to
rotate
--- move the control lever off and then on. The PTO shaft must
not start to rotate
--- stop the engine and switch off the current. Then start the
engine and move the control lever off and on. Now the PTO
is in function.

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